Fur-sewing machine.



No. 307,346. PATLNTLD DLC. 12, 1905.

- G. L. BALLARD.

PUR SEWING MACHINE.

APPLICATION FILED MAY 12. 1904.

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No. 807,346. v PATETBD DEG. 12, 1905. G. L. BALLARD.

PUR SEWING MACHINE.

'APPLIoATIoN FILED 11u12. 1904.

4 SHEETS-SHEET 2.

No. 807,346. PATENTED DBG. 1,2, 1905. G. L. BALLARD.

FUR SEWING MACHINE.

APPLIoATIoN 11.21) M4112. 1904.

4 SHEETS-SHEET 3.

No. 807,346. PATENTED DEC.. 12, 1905. G. L. BALLARD.

PUB. SEWING MACHINE.

APPLICATION FILED MAY 12. 1904.

. 4 SHEETS-SHEET 4.

UNITED STATES PATENT oFFIoE.

FUR-SEWING MACHINE.

Speccation of Letters Patent.

Patented Dec. 12, 1905.

Application filed May 12, 1904. Serial No. 207,671.

To wZZ whom t may concern: l

vBe it known that I, GEORGE LAwsoN BAL- LARD, of the city of Toronto, inthe county of York,in the Province of Ontario,Oanada,have inventedcertain new and usefulImprovements in Fur-Sewing Machines, of which thefollowing is a specification.

My invention relates to improvements in fur-sewing machines; and theprimary object sizes of needles and loopers according to the Work it isdesigned to sew, to devise animproved means for driving the feed-wheels,

land, in fact, to dispense with all springs in the drive of the machine,and thereby produce a positive drive not liable to get out of order. Toattain these objects I have constructed and arranged my machine indetail, as hereinafter more particularly explained.

Figure l is a perspective view of my improved machine, portion of thecasing being broken away to exhibit the construction and arrangement ofdifferent portions of the operating mechanisms.. Fig. 2 is a perspectiveView of the machine from the opposite side to that shown in Fig. l, thecasing being also likewise broken away to exhibit the working parts. thecasing, showing the construction and arrangement of the cams'on the maindrivingshaft. Fig. 4 is a vertical section at right angles to the-section taken in Fig. 3. Fig. 5 is y a detail showing the looper andarm, together with the means for holding the looper in the arm. Fig. 6is a detail of the thread-tensiondevice. Fig. 7 is a sectional detailthrough the needle-holder. Fig. 8 is a detail of the crank on the mainshaft from which the needle-bar derives its reciprocating movement. Fig.9 is a plan View of the invention with the y cover removed, showing theposition of the looper relative to the needle-bar.

In the drawings like letters and numeralsl Fig. 3 is a vertical sectionthrough.

of reference indicate corresponding parts in each figure.

A is the main casing of the machine, which is substantially cylindricalin form and provided with a forwardly-extending hollow off set A in thebase.

B is the maindriving-shaft, which is divided in the center, as indicatedin Fig. 8, and is journaled in suitable bearings AX, forming part of thecasing A, and is provided with suitable driving pulleys B. A crank isformed on the shaft B between the collars C and C (see Fig. 8) by meansof the pin c, held in the collars by the set-screws c and c2. A block c3is loosely held on the pin between the collars C and O.

D is the inner feeding-wheel, Which has a corrugated rim d, asindicated. The feed- Wheel D is located in front of the casing and issecured at the upper end of the arbor D', which extends through thefront bearing AX, forming part of the casing, and the front lowerbearing A3, forming part of the hollow offset A of thecasing. n

d* is a collar secured on the arbor D', and CZ is a threaded sleevethrough which the arbor D extends and which passes through acorrespondingly-threaded orifice in the bearing AX. provided With a nut@Z2 of any suitable form.

Z3 is a locknut fitting on the threaded sleeve OZ and designed to lockthe sleeve in any position to which it may be adjusted by means of thenut-shaped end d2.

It Will now be readily seen that the feeding- Wheel D may be read-ilyvertically adjusted as the rim becomes Worn.

E is the opposing feeding-wheel, which is secured in the end of theshort arbor E and clamped by means of the screw c, extending through thelugs e in the end of the arm E2. The feeding-wheel. E is provided with acorrugated raised rim corresponding to the rim OZ in the feeding-wheelD.

F is a plate provided with a groove f, designed to form a needle-way,such plate being secured to the feed-Wheel E by the central screw f.

The lower end of the sleeve Z is IOO The arm E2 is bent, as shown, atthe front end, and is otherwise curved and formed, as shown, beingsupported intermediate of its length on the arm G, secured on the end ofthe rock-shaft g, suitably journaled in the easing. The arm E2 issupported at the rear end by an arm G', pivotally supported on the studg', journaed at the back of the casing.

G2 is an arm secured to the rock-shaft g within the casing andconnected'by a rod g2 to a bell-crank lever G3, journaled between thelugs a at the back of the casing. The forward end of the rod g2 isthreaded and provided with the adjusting-nuts g3 and a spiral spring g4,extending between such adjusting-nuts and the back of the casing andencircling theI rod g2.

It Will now be seen by depressing the outer end of the bell-crank leverG3 the arm G will be moved forwardly, and thereby throw thefeeding-Wheel E away from the feedingwheel D, so as to permit of theinsertion of the work. The tension required for holding the feedingwheel.E against the feeding-wheel D is of course regulated by the nuts g3 andlspring gi, hereinbefore referred to.

At the lower end of thearbor D and within the offset A' of the casing Isecure the ratchetwheel H, which is provided with aydownwardly-extending hub t. Upon the hub /L I journal a sleeve H', heldin position by a washer la' and screw h2. On this sleeve H', I providethe radially-extending arms H2 and H3. Upon the arm H2, I secure thespringheld push-pawl h3, and upon the frame I pivot the spring-heldlocking-pawl if. Both pawls engage with the ratchet-wheel H, asindicated.

I is a lever provided with a central opening c', through which extendsthe stationary counter-shaft J. The lever I is provided with a forkedupper end I', within which is located -the eccentric K, secured on themain shaft B. |I`he inner end of the lever I is pivoted on a pin i',secured on the rocker-arm J'.

j is a rod connected at one end to the pin c" and at the opposite end toa pin h3 on the armI-I3.

ct' is a slot in the frame opposite and of substantially the same sizeas the slot 2 in the lever I.

2 is a screw having located at one end the block 3, which is designed toit within the slot 2 and being provided with a head 4 and thumb-nut orwheel 5 for clamping the screw 2, and consequently the block 3, in anydesired position in the slot 2. The screw 2 and block 3 serve as afulcrum for the lever I, and it will be seen that such fulcrum isreadily adjustable.

The eccentric K as the'shaft B is caused to -revolve rocks the lever Ion its adjustable vertically.

L is Ythe needle-bar, which is journaled in suitablebearings in thefront and back of the casing, through both of which it extends.

lZ is a bracket secured to or forming part of the front end of theneedle-bar, and Z' is a straddle-braeket fitting over the lower frontend of the bracket Z. The lower end of the straddle-bracket Z isprovided with a recess Z2, and the front end of the bracket Z is alsoprovided with 4an oppositely-located recess Z3, and between therecesses, which extend longitudinally in the brackets, is held theneedle 6, such needle being clamped in position by means of theset-screw 7, extending through the top of the straddle-bracket Z2 andabutting the top of the depressed lower portion of the bracket Z.

M iS a depending fork secured to the needle-bar L by the set-screw m.The prongs of the fork M extend to each side of the block e3 on thecrankpin c and hug such block closely. The bottom end of the forkextends into a guideway M', secured to the shaft J. It will thus be seenthat upon the rotation of the main shaft B the requisite reciprocatingmovement is imparted through the fork M to the needle-bar and theneedle-bar is held from swinging in its movement, and thereby thelateral sway of the needle is prevented as -it reciprocates over thefeeding-wheels.

A4 is a cover for the casing, which is hinged at the back and isprovided with an upwardlyextending lug carrying a thread-tension devicea". rl`he front end of the cover is provided with an opening a, locatedoppositev the opening Z7 at the top of the casing.

8 is a spring-arm secured to the casing beneath the opening a7, and 9 isa pin provided with a head against which such spring-arm is designed tocome in contact to produce a tension on the thread as the needle movesforward. The course of the thread l0 is indicated by dotted lines inFig. l.

N is the looper-arm, which is in curved form, as shown, and has aforward end provided with a toe n of a form which it is not necessaryhere to describe. The looper N in -the working of my machine coacts withthe needle, as is well known in machines of this class, and in socoacting the toe n must be given to form the loop in sewing a lateral,backward, and forward movement and substantially at the same time areciprocating movement from front to back, as well as a downwardmovement over the feed-wheel D in proximity to the rim. In order toeffect this movement, I carry the looper N in the socket end of a leverN. The rear end of the looper extends through a sleeve n', such sleevebeing held in position in the lever by a set-screw n2. The lever has alateral off- IOO IIO

IZO

set N2, and such oset abuts the upper end of the bellcrank O, beingpivotally secured therein by the pin o. The bell-crank O is pivoted on apin o', having bearings in the frame, and has a rearwardly-projectingforked lower end which extends over an eccentric O, secured on the shaftB. The rear end of the lever Nl is connected by a link 9 to a bellcrank10, journaled on the counter-shaft J. The connection of the lever to thelink is made by a pin 11, having an eccentric-pin 11 located in the endof same. By unscrewing the clamping-screw connecting the lugs n3 at theend of the lever and turning the pin 11 the de# sired adjustment may begiven to regulate the amount of downward throw of the front end of thelooper. The lever N is so set that it inclines toward the vertical planepassing through the needle, and this is preferably so, as -it enablesthe pointed end of the looper to t more closely the inner contour of therim of the feed-wheel D when the looper has reached the limit of itsdownward movement toward the feed-wheel. Such incline of the lever andlooper also serves to facilitate the passage of the needle into theloop, which is an important desideratum.

The bell-crank l0 has a roller 10 pivoted at the rear end, which extendsinto a cam-groove 12 in the cam-wheel l2, and it is this camgroove whichimparts the necessary vertical movement to the rear end of the lever N',and consequently to the forward end or point of the looper.

The reciprocating movement of the looper N is imparted to it by theeccentric O acting within the forked lower end of the bell-crank O, ashereinbefore described, thereby tilting the bell-crank, which ispivotally connected to the looper-holder N. v

In order to impart alateral oscillating movement to the looper N, Iprovide the following simple mechanism. P is an arm pivoted on a stud p,held in the front of the casing. Q is a peripheral cam secured on theshaft B. p is a roller pivoted on a pin p2, fixed in the upper end ofthe arm P and extending into the groove of the peripheral cam. R is aguideway formed on the upper end of the arm P. S is a rod havingjournaled on the lower end the rotatable ball-shaped roller s and havingthe upper end formed in the shape of a clamping-sleeve s', through whichthe looper N extends and to which the sleeve s' is clamped by theclamping-screw s2, extending through the lugs s3, forming portion of thesleeve. The clamping-sleeve s extends slightly over the sleeve n', asindicated in Fig. 5,'in order that should the looper be withdrawn thesleeve n will support the clamping-sleeve in position, so that thelooper may be inserted through the sleeve again. The cam-groove impartsan oscillating movement to the bottom of the rod S, and thus it will beseen a similar movement is imparted to the forward end or toe n of thelooper. As, however, the looper is imparted a reciprocating movementfrom front to rear, at the same time it will be seen that the guideway Rserves to allow of the oscillating lateral movement being imparted atthe same time that the reciprocating movement is imparted, as the rollerduring the oscillating movement will pass backwardly and forwardlywithin the guideway R. It will consequently be seen that the looper isgiven its reciprocating, lateral oscillating, and required verticalmovement necessary for its proper coacting with the needle by themechanism I have hereinbefore described.

It Will be apparent from this description that on account of the cam andeccentric motions hereinbefore described for imparting the requisitemovements vibration is reduced in my machine to a minimum, andconsequently the wear and tear are minimized and the durability of themachine increased to a maximum.

What I claim as my invention isl. A fur-sewing machine, comprising aninner feed-wheel, an. outer feed-wheel, a needle, meansv for giving theneedle a longitudinal movement, a looper having a curved end and toe,means for giving said looper a reciprocating movement, means for givingthe forward end of the looper a lateral oscillating movement, means forgiving said enda risingand-falling movement said means being independentof each other and means including an eccentric for regulating therising-and-falling movement, substantially as described.

2. The combination with the looper and looper-holding lever, of abell-crank journaled in the frame and pivotally connected to said lever,means for tilting the bell-crank so as to impart a reciprocatingmovement to the looper, a counter shaft, an arm journaled thereon, alink connected at one end to the arm, a pin extending through the end ofthe looper-lever said pin having an eccentricallyarranged projection,said projection extending through the opposite end of the link, meansfor imparting a rocking movement to the arln and means for giving saidlever a rocking movement.- I

3. The combination with the looper and the looper holding lever suitablypivoted and means designed to impart a reciprocating movement to thelooper means for giving the end of the looper an up-and-down movement,of a rod provided with a clamping sleeveshaped upper end fitting withina notch in the looper-lever and through which the looper extends, an armjournaled on the stud within the frame and providedwith a guideway, aball-shaped roller journaled on the lower end of the rod and located inthe guideway, a roller journaled on a pin on the arm and a peripheralcam secured on the main shaft and into which such roller extends as andfor the purpose specified.

4. The combination with the looper and IOO ISO

looper-holding lever, means for reciprocating said looper, means forgiving the end of said looper an up-and-down movement, a rod having aclamping-sleeve at its upper end, said looper-lever having a recess nearone end into which said sleeve is adapted to fit, an internal sleevehaving one end extending into the recess over which the clamping-sleeveextends so as to hold said clamping-sleeve in position to receive thelooper and means for oscillating the rod, substantially as described.

5. The combination with the needle and needle-bar held in suitablebearings in the casing, of the main divided shaft journaled in thecasing and provided at the point of division with inner end disks a pinremovably connected to said disks, a block journaled on said pin betweenthe disks, a depending fork secured to the needle-bar and 'straddlingthe block on the crank-pin and a guidevvay for the lower end of the forkas and for the purpose specified.

6. The combination with the needle and needle-bar and looper-bar, of themain divided shaft journaled in the casing, disks mounted at the pointof division of said shaft, a crankpin connecting said disks, a blockjournaled on said pin, a depending fork secured to the needle-bar andstraddling the block, one of said disks having a cam-groove therein, abar having a portion engaging said groove and a connection from said barto the looper-bar for giving the end of the looper-bar a reciprocatingmovement.

GEORGE LAW'soN BALLARD.

Witnesses:

B. BOYD, M. MOLAREN.

